[PATCH v2 4/4] doc: update 26.11 release notes for cnxk dmadev

[Vamsi Krishna <vattunuru@marvell.com>]

From: Vamsi Attunuru <vattunuru@marvell.com>

Document CN20K DPI DMA PF/VF support and inter-process domain DMA
transfers in the Marvell cnxk dmadev PMD for DPDK 26.11.

Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
---
 doc/guides/rel_notes/release_26_11.rst | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index 4b3e5d995c..f9da09ab45 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -55,6 +55,23 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================
 
+* **Updated Marvell cnxk dmadev driver.**
+
+  Added support for CN20K DPI DMA hardware in the ``cnxk`` dmadev PMD.
+
+  * Added support for CN20K DPI PF (PCI device ID ``0xA0E8``) and VF
+    (PCI device ID ``0xA0E9``) devices.
+  * CN20K DPI PF and VF devices can be bound directly to ``vfio-pci`` and
+    used without the ``octeontx2_dpi.ko`` kernel driver.
+  * Added support for multiple virtual channels per device on CN20K.
+  * Added support for ``copy``, ``copy-sg``, ``fill`` and enqueue/dequeue
+    operations on CN20K.
+  * Added support for inter-process domain DMA transfers on CN20K using the
+    access pair group API
+    (``rte_dma_access_pair_group_create``,
+    ``rte_dma_access_pair_group_join``,
+    ``rte_dma_access_pair_group_handler_get`` and related functions).
+
 
 Removed Items
 -------------
-- 
2.34.1